MTNL Mahanagar Telephone Nigam Ltd Management Changes Announcement 2026 - Appointment extension MTNL extends the additional CMD charge for A. Robert J. Ravi at BSNL for six months, effective mid-April 2026, or until a regular CMD assumes charge..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Mahanagar Telephone Nigam Ltd